12221542522 has 32 divisors (see below), whose sum is σ = 23148156672. Its totient is φ = 4715361024.

The previous prime is 12221542519. The next prime is 12221542589. The reversal of 12221542522 is 22524512221.

It is a super-2 number, since 2×12221542522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110853 + ... + 1121800.

It is an arithmetic number, because the mean of its divisors is an integer number (723379896).

Almost surely, 2^12221542522 is an apocalyptic number.

12221542522 is a deficient number, since it is larger than the sum of its proper divisors (10926614150).

12221542522 is a wasteful number, since it uses less digits than its factorization.

12221542522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232702.

The product of its digits is 6400, while the sum is 28.

The spelling of 12221542522 in words is "twelve billion, two hundred twenty-one million, five hundred forty-two thousand, five hundred twenty-two".